<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>t1</title>
</head>
<body>
{% if style == 0 %}
    <span style="color:red">{{ message }}</span>
{% elif style == 1 %}
    <span style="color:blue">{{ message }}</span>
{% else %}
    <span style="color:green">{{ message }}</span>
{% endif %}
</body>
</html>